• Country
• Great Britain (UK)

• Manufacturer / Brand
• Marconi Co. (Marconiphone, Marconi's Wireless Telegraph Co. Ltd.), GB (not tubes - see also HMV His Master's Voice)

• Year
• 1959 ?

• Category
• Military Transceiver (TRX)

• Radiomuseum.org ID
• 120415

• Number of Tubes
• 12

• Valves / Tubes
• KTW62 KTW62 X66 KTW62 KTW62 KTW62 KTW62 DH63 KT63 KTW62 U50 ARDD5

• Main principle
• Superhet with RF-stage; ZF/IF 465 kHz

• Wave bands
• Broadcast, Long Wave and more than two Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 200-250 Volt

• Loudspeaker
• - For headphones or amp.

• Power out
• 1 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: B28 CR100/7 [with lid transmitter] - Marconi Co. Marconiphone,

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 16 x 12.25 x 16.5 inch / 406 x 311 x 419 mm

• Notes
• In 1959, excess B28 receivers have been modified (Lt. Compley-Mey) with installation of a 10 W crystal controlled CW transmitter under the lid of the receiver.
  Radiotelegraphists from Royal National Reserve got a set for conducting exercises from their homes and for setting up an emergency backup network.

• Net weight (2.2 lb = 1 kg)
• 37 kg / 81 lb 8 oz (81.498 lb)

• Author
• Model page created by Martin Bösch. See "Data change" for further contributors.

• Other Models

• Here you find 502 models, 335 with images and 317 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Marconi Co. (Marconiphone, Marconi's Wireless Telegraph Co. Ltd.), GB (not tubes - see also HMV His Master's Voice)